Give the World Mobile Congress organizers credit for bringing some real theater to the stage today. Mark Zuckerberg made a keynote appearance in Barcelona with three telecom executives from developing markets.…

Facebook now has 2 million advertisers, a milestone CEO Mark Zuckerberg announced today in a video post on the social network. Zuckerberg and COO Sheryl Sandberg thanked small-and-medium-sized businesses (SMBs)…